CN214198600U - Cement kiln hood exhaust-heat boiler - Google Patents
Cement kiln hood exhaust-heat boiler Download PDFInfo
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- CN214198600U CN214198600U CN202120124274.7U CN202120124274U CN214198600U CN 214198600 U CN214198600 U CN 214198600U CN 202120124274 U CN202120124274 U CN 202120124274U CN 214198600 U CN214198600 U CN 214198600U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model discloses a cement kiln hood exhaust-heat boiler, including the high-pressure over heater that sets gradually from bottom to top, high-pressure evaporimeter, low pressure over heater, high-pressure economizer, low pressure evaporimeter and low pressure economizer and set up in high temperature section boiler pre-dust collector and the middle temperature section boiler pre-dust collector of high-pressure over heater below, set up high temperature section boiler waste gas entry on the high temperature section boiler pre-dust collector, set up middle temperature section boiler waste gas entry on the middle temperature section boiler pre-dust collector, the top of low pressure economizer sets up exhaust outlet. The utility model discloses a cement kiln hood exhaust-heat boiler adopts two flues, lower air inlet arrangement mode, and the boiler both sides are as the air intake, and the boiler top is the air outlet, can reduce engineering cost, improves waste gas utilization efficiency, realizes the high-grade heat utilization maximize.
Description
Technical Field
The utility model belongs to the technical field of industrial production equipment, specifically speaking, the utility model relates to a cement kiln hood exhaust-heat boiler.
Background
With the popularization of cement kiln pure low-temperature waste heat power generation projects in India and Bakistan and the upgrading of waste gas recovery technology of cement kiln grate cooler manufacturers, two paths of hot air can be respectively extracted from a grate cooler, the hot air in a high-temperature section is more than 500 ℃, the hot air in a middle-temperature section is more than 350 ℃, the existing kiln head grate cooler waste gas waste heat boiler system can only mix the two paths of hot air and then enters a boiler for heat exchange, the maximum utilization of high-grade heat cannot be realized, and the overall economic benefit is lower.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a cement kiln hood exhaust-heat boiler, the purpose realizes the high-grade heat utilization maximize.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: cement kiln hood exhaust-heat boiler, including the high-pressure over heater that sets gradually from bottom to top, high-pressure evaporator, the low pressure over heater, high-pressure economizer, low pressure evaporator and low pressure economizer and set up in high temperature section boiler pre-dust collector and the middle temperature section boiler pre-dust collector of high-pressure over heater below, set up high temperature section boiler waste gas entry on the high temperature section boiler pre-dust collector, set up middle temperature section boiler waste gas entry on the middle temperature section boiler pre-dust collector, the top of low pressure economizer sets up the exhaust outlet.
The top of the waste heat boiler is provided with a low-pressure steam pocket and a high-pressure steam pocket, and the low-pressure steam pocket is provided with a deoxidizing head.
And a tortoise shell net layer is welded on the windward side of the inner side of the medium-temperature boiler pre-dust collector, and wear-resistant daub is coated on the tortoise shell net layer.
And a tortoise shell net layer is welded on the windward side of the inner side of the high-temperature section boiler pre-dust collector, and wear-resistant daub is coated on the tortoise shell net layer.
And the windward side of the high-pressure superheater is provided with an anti-abrasion pipe, and no steam exists in the anti-abrasion pipe.
The high-pressure superheater adopts a low-fin heat exchange tube.
The utility model discloses a cement kiln hood exhaust-heat boiler adopts two flues, lower air inlet arrangement mode, and the boiler both sides are as the air intake, and the boiler top is the air outlet, can reduce engineering cost, improves waste gas utilization efficiency, realizes the high-grade heat utilization maximize.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a front view of a waste heat boiler at the kiln head of a cement kiln;
FIG. 2 is a side view of the waste heat boiler of the kiln head of the cement kiln;
labeled as: 1. a high pressure superheater; 2. a high pressure evaporator; 3. a low pressure superheater; 4. a high-pressure economizer; 5. a low pressure evaporator; 6. a low-pressure economizer; 7. a high-temperature section boiler pre-deduster; 8. a medium-temperature boiler pre-deduster; 9. a high temperature section boiler exhaust gas inlet; 10. a medium temperature section boiler exhaust gas inlet; 11. an exhaust gas outlet; 12. a low pressure steam drum; 13. a high pressure steam drum; 14. an oxygen removal head.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.
As shown in fig. 1 and 2, the utility model provides a cement kiln hood exhaust-heat boiler, including the high-pressure over heater 1 that sets gradually from bottom to top, high-pressure evaporator 2, low pressure over heater 3, high-pressure economizer 4, low pressure evaporator 5 and low pressure economizer 6 and set up in high-temperature section boiler pre-deduster 7 and the middle-temperature section boiler pre-deduster 8 of high-pressure over heater 1 below, set up high-temperature section boiler waste gas entry 9 on the high-temperature section boiler pre-deduster 7, set up middle-temperature section boiler waste gas entry 10 on the middle-temperature section boiler pre-deduster 8, the top of low pressure economizer 6 sets up exhaust outlet 11.
Specifically, as shown in fig. 1 and 2, the low-pressure evaporator 5 is disposed below the low-pressure economizer 6, the high-pressure economizer 4 is disposed below the low-pressure evaporator 5, the low-pressure superheater 3 is disposed below the high-pressure economizer 4, the high-pressure evaporator 2 is disposed below the low-pressure superheater 3, and the high-pressure superheater 1 is disposed below the high-pressure evaporator 2. High temperature section boiler dust preselector 7 sets up in high-pressure superheater 1's below, and high temperature section boiler dust preselector 7 and middle temperature section boiler dust preselector 8 are for setting up side by side, and middle temperature section boiler waste gas entry 10 sets up at the top of middle temperature section boiler dust preselector 8, and high temperature section boiler waste gas entry 9 sets up at the top of high temperature section boiler dust presetter 7, and exhaust outlet 11 sets up the top at exhaust-heat boiler.
As shown in fig. 1 and 2, a low-pressure steam drum 12 and a high-pressure steam drum 13 are arranged at the top of the waste heat boiler, the low-pressure steam drum 12 is connected with the low-pressure evaporator 5, the high-pressure steam drum 13 is connected with the high-pressure evaporator 2, water in the high-pressure steam drum 13 is heated to the high-pressure evaporator 2 to generate steam, and water in the low-pressure steam drum 12 is heated to the low-pressure evaporator 5 to generate steam. Therefore, the waste heat boiler adopts a double-pressure system, and the low-pressure steam drum 12 is provided with the oxygen removal head 14 as the thermal oxygen removal of the system.
Preferably, the bottom of the waste heat boiler is provided with a gravity settling chamber, the rising wind speed of a settling area of the settling chamber is lower than 3m/s, and a guide plate is arranged at a wind direction transformation position to ensure that the wind speed uniformly passes through each heat exchange module.
Preferably, a tortoise shell net layer is welded on the windward side of the inner side of the medium-temperature boiler pre-dust collector 8, and wear-resistant daub is coated on the tortoise shell net layer. And a tortoise shell net layer is also welded on the windward side of the inner side of the high-temperature boiler pre-dust collector 7, and wear-resistant daub is coated on the tortoise shell net layer.
Preferably, an anti-abrasion pipe is arranged on the windward side of the high-pressure superheater 1, no steam is in the anti-abrasion pipe, and the steam heat exchange pipe of the superheater is less scoured.
Preferably, the high-pressure superheater 1 adopts a low-fin heat exchange tube to prevent dust adhesion, and an ash remover interface is reserved on the outer side of the superheater box body so as to facilitate ash removal when raw material adheres to the high-temperature superheater when the kiln system runs raw material.
Preferably, the high-temperature boiler pre-dust remover 7, the superheater heat exchange pipe, the header and the pressure-resistant part shell are made of alloy steel.
Preferably, an expansion device is arranged between each group of heat exchange surfaces of the boiler dust remover and the boiler, so that each module is ensured to be heated and expanded uniformly.
Preferably, the high-temperature superheater is divided into two sections of superheaters, a header is arranged between the two sections of superheaters, an interface for receiving kiln tail boiler steam is reserved on the header, a water spraying device is arranged, and when the boiler steam is too high, water is sprayed by the water spraying device to cool.
The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.
Claims (6)
1. Cement kiln hood exhaust-heat boiler, its characterized in that: including the high-pressure over heater that sets gradually from bottom to top, high-pressure evaporimeter, low pressure over heater, high-pressure economizer, low pressure evaporimeter and low pressure economizer and set up in high temperature section boiler pre-dust collector and the middle temperature section boiler pre-dust collector of high pressure over heater below, set up high temperature section boiler waste gas entry on the high temperature section boiler pre-dust collector, set up middle temperature section boiler waste gas entry on the middle temperature section boiler pre-dust collector, the top of low pressure economizer sets up the exhaust outlet.
2. The cement kiln head waste heat boiler as claimed in claim 1, characterized in that: the top of the waste heat boiler is provided with a low-pressure steam pocket and a high-pressure steam pocket, and the low-pressure steam pocket is provided with a deoxidizing head.
3. The cement kiln head waste heat boiler as claimed in claim 1 or 2, characterized in that: and a tortoise shell net layer is welded on the windward side of the inner side of the medium-temperature boiler pre-dust collector, and wear-resistant daub is coated on the tortoise shell net layer.
4. The cement kiln head waste heat boiler as claimed in claim 1 or 2, characterized in that: and a tortoise shell net layer is welded on the windward side of the inner side of the high-temperature section boiler pre-dust collector, and wear-resistant daub is coated on the tortoise shell net layer.
5. The cement kiln head waste heat boiler as claimed in claim 1 or 2, characterized in that: and the windward side of the high-pressure superheater is provided with an anti-abrasion pipe, and no steam exists in the anti-abrasion pipe.
6. The cement kiln head waste heat boiler as claimed in claim 1 or 2, characterized in that: the high-pressure superheater adopts a low-fin heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120124274.7U CN214198600U (en) | 2021-01-18 | 2021-01-18 | Cement kiln hood exhaust-heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120124274.7U CN214198600U (en) | 2021-01-18 | 2021-01-18 | Cement kiln hood exhaust-heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214198600U true CN214198600U (en) | 2021-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120124274.7U Active CN214198600U (en) | 2021-01-18 | 2021-01-18 | Cement kiln hood exhaust-heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214198600U (en) |
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2021
- 2021-01-18 CN CN202120124274.7U patent/CN214198600U/en active Active
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